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cognitive neurology

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https://www.readbyqxmd.com/read/28102474/anti-amnestic-effect-of-curcumin-in-combination-with-donepezil-an-anticholinesterase-drug-involvement-of-cholinergic-system
#1
Ayodele Jacob Akinyemi, Ganiyu Oboh, Sunday Idowu Oyeleye, Opeyemi Ogunsuyi
Recently, combination therapy involving cholinesterase (ChE) inhibitor with other neuroprotective agents has shown better desirable effect in the management/prevention of dementia but limited information is available on their effect with dietary polyphenols. Hence, this study sought to assess the combined pretreatment effect of curcumin, the major polyphenolic compound of turmeric (Curcuma longa) rhizomes, with donepezil, a cholinesterase inhibitor, on cognitive function in scopolamine-induced memory impairment in rats...
January 19, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28102362/evaluation-of-region-selective-bilirubin-induced-brain-damage-as-a-basis-for-a-pharmacological-treatment
#2
Matteo Dal Ben, Cristina Bottin, Fabrizio Zanconati, Claudio Tiribelli, Silvia Gazzin
The neurologic manifestations of neonatal hyperbilirubinemia in the central nervous system (CNS) exhibit high variations in the severity and appearance of motor, auditory and cognitive symptoms, which is suggestive of a still unexplained selective topography of bilirubin-induced damage. By applying the organotypic brain culture (OBC: preserving in vitro the cellular complexity, connection and architecture of the in vivo brain) technique to study hyperbilirubinemia, we mapped the regional target of bilirubin-induced damage, demonstrated a multifactorial toxic action of bilirubin, and used this information to evaluate the efficacy of drugs applicable to newborns to protect the brain...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28100843/pathophysiology-and-molecular-basis-of-selected-metabolic-abnormalities-in-huntington-s-disease
#3
Jolanta Krzysztoń-Russjan
Huntington's disease (HD) is an incurable, devastating neurodegenerative disease with a known genetic background and autosomally dominant inheritance pattern. HTT gene mutation (mHTT) is associated with polymorphic fragment elongation above 35 repeats of the CAG triplet. The mHTT product is an altered protein with a poly-Q elongated fragment, with the highest expression determined in the central nervous system (CNS) and with differentiated expression outside the CNS. A drastic loss of striatal and deeper layers of the cerebral cortex neurons was determined in the CNS, but muscle and body weight mass loss with dysfunction of many organs was also observed...
December 30, 2016: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28100787/polymorphic-variants-of-human-protein-l-isoaspartyl-methyltransferase-affect-catalytic-activity-aggregation-and-thermal-stability-implications-for-the-etiology-of-neurological-disorders-and-cognitive-aging
#4
Charity Juang, Baihe Chen, Jean-Louis Bru, Katherine Nguyen, Eric Huynh, Mahsa Momen, Jeungjin Kim, Dana W Aswad
Protein L-isoaspartyl methyltransferase (PIMT/PCMT1), a product of the human pcmt1 gene, catalyzes repair of abnormal L-isoaspartyl linkages in age-damaged proteins. Pcmt1 knockout mice exhibit a profound neuropathology and die 30-60 days postnatal from an epileptic seizure. Here we express 15 reported variants of human PIMT and characterize them with regard to their enzymatic activity, thermal stability, and propensity to aggregation. One mutation, R36C, renders PIMT completely inactive, while two others, A7P and I58V, exhibit activity that is 80-100% higher than wild type...
January 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28100742/visual-sampling-predicts-hippocampal-activity
#5
Zhong-Xu Liu, Kelly Shen, Rosanna K Olsen, Jennifer D Ryan
: Eye movements serve to accumulate information from the visual world, contributing to the formation of coherent memory representations that support cognition and behavior. The hippocampus and the oculomotor network are well connected anatomically through an extensive set of polysynaptic pathways. However, the extent to which visual sampling behavior is related to functional responses in the hippocampus during encoding has not been studied directly in human neuroimaging. In the current study, participants engaged in a face processing task while brain responses were recorded with fMRI and eye movements were monitored simultaneously...
January 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28096960/estrogen-agonist-genistein-differentially-influences-the-cognitive-and-motor-disorders-in-an-ovariectomized-animal-model-of-parkinsonism
#6
Elaheh Arbabi, Gholamali Hamidi, Sayyed Alireza Talaei, Mahmoud Salami
OBJECTIVES: Parkinson's disease (PD) is a progressive neurological disorder associated with motor disabilities and cognitive dysfunction as well. Evidence indicates that PD occurs less frequently in women than men, confirming a role for steroid hormones in protection of dopaminergic nigrostriatal neurons. It is reported that soy genistein, an estrogen agonist phytoestrogen, display neuroprotective effects against neuronal death. In this study we evaluated the effect of genistein in animal models of Parkinsonism (P) and Parkinsonism + ovariectomized (OP)...
December 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28096078/how-to-prevent-the-microvascular-complications-of-type-2-diabetes-beyond-glucose-control
#7
REVIEW
Willy Marcos Valencia, Hermes Florez
Microvascular complications (retinopathy, nephropathy, and neuropathy) affect hundreds of millions of patients with type 2 diabetes. They usually affect people with longstanding or uncontrolled disease, but they can also be present at diagnosis or in those yet to have a diagnosis made. The presentation and progression of these complications can lead to loss of visual, renal, and neurologic functions, impaired mobility and cognition, poor quality of life, limitations for employment and productivity, and increased costs for the patient and society...
January 17, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28095735/criterion-validity-of-the-d-kefs-color-word-and-verbal-fluency-switching-paradigms-following-traumatic-brain-injury
#8
Luke B Anderson, Rebekah Jaroh, Hillary Smith, Carrie-Ann H Strong, Jacobus Donders
The present study was composed of two parts examining the clinical utility of the Delis-Kaplan Executive Function System (D-KEFS) Verbal Fluency and Color-Word subtests in traumatic brain injury (TBI). In the first part, the performance of 128 outpatients with mild to severe TBI on the Verbal Fluency and Color-Word subtests was examined in relation to two primary indicators of TBI severity: length of coma and the presence of intracranial lesions on neuroimaging through regression analysis. After controlling for education, ethnicity, and complicating premorbid and comorbid factors, length of coma predicted performance on the Color-Word Inhibition/Switching subtest, whereas the presence of diffuse lesions was related to Verbal Fluency Category Switching performance...
January 17, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28094295/loss-of-pafr-prevents-neuroinflammation-and-brain-dysfunction-after-traumatic-brain-injury
#9
Xiang-Jie Yin, Zhen-Yan Chen, Xiao-Na Zhu, Jin-Jia Hu
Traumatic brain injury (TBI) is a principal cause of death and disability worldwide, which is a major public health problem. Death caused by TBI accounts for a third of all damage related illnesses, which 75% TBI occurred in low and middle income countries. With the increasing use of motor vehicles, the incidence of TBI has been at a high level. The abnormal brain functions of TBI patients often show the acute and long-term neurological dysfunction, which mainly associated with the pathological process of malignant brain edema and neuroinflammation in the brain...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094021/neuropsychological-characteristics-of-encephalopathy-in-susac-s-syndrome-case-report
#10
Magdalena Roessler-Górecka, Tadeusz Mendel, Justyna Wiśniowska, Joanna Seniów
Susac's Syndrome (SS) is a rare, autoimmune angiopathy characterized by hearing loss, retinal artery occlusions and encephalopathy, which is usually expressed in multifocal neurological signs and symptoms, confusion state and cognitive impairment. There have been few descriptions of neuropsychological assessment of SS. We present a case study of 29-year-old woman who developed full SS. During the post-acute stage of disease, she was admitted to neurorehabilitation ward to improve her cognitive-behavioral and motor functioning...
January 10, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28093992/effects-of-thyroid-hormones-and-their-metabolites-on-learning-and-memory-in-normal-and-pathological-conditions
#11
Alice Accorroni, Grazia Chiellini, Nicola Origlia
BACKGROUND: Classical thyroid hormones have an established necessary role in the normal development of the central nervous system, and they have been recently considered as decisive factors influencing cognitive functions in adult brain and involved in the development of Alzheimer's disease. The picture summarizing thyroid hormone effects on adult brain, however, does not only include classical thyroid hormones but also the products of their peripheral metabolism. These latter have been considered as inactive breakdown products for long but recently were proved to produce significant biological effects...
January 16, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28093358/mapping-the-functional-connectome-traits-of-levels-of-consciousness
#12
Enrico Amico, Daniele Marinazzo, Carol Di Perri, Lizette Heine, Jitka Annen, Charlotte Martial, Mario Dzemidzic, Murielle Kirsch, Vincent Bonhomme, Steven Laureys, Joaquín Goñi
Examining task-free functional connectivity (FC) in the human brain offers insights on how spontaneous integration and segregation of information relate to human cognition, and how this organization may be altered in different conditions, and neurological disorders. This is particularly relevant for patients in disorders of consciousness (DOC) following severe acquired brain damage and coma, one of the most devastating conditions in modern medical care. We present a novel data-driven methodology, connICA, which implements Independent Component Analysis (ICA) for the extraction of robust independent FC patterns (FC-traits) from a set of individual functional connectomes, without imposing any a priori data stratification into groups...
January 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/28091829/inhibition-of-dpp-4-activity-and-neuronal-atrophy-with-genistein-attenuates-neurological-deficits-induced-by-transient-global-cerebral-ischemia-and-reperfusion-in-streptozotocin-induced-diabetic-mice
#13
Mithun Singh Rajput, Purnima Dey Sarkar, Nilesh Prakash Nirmal
Genistein, an isoflavonoid phytoestrogen, has been known for its potential pharmacological properties especially for neuroprotection and treating diabetes. The present study aims to determine the neuroprotective efficacy of genistein against global cerebral ischemia-reperfusion-induced neuronal injury in streptozotocin-induced diabetic mice and explore the underlying mechanisms. Streptozotocin-induced diabetic mice were subjected to transient cerebral ischemia by occluding both common carotid arteries for 30 min followed by 24 h reperfusion to induce neuronal injury...
January 16, 2017: Inflammation
https://www.readbyqxmd.com/read/28090660/intermittent-catheterization-acceptance-test-i-cat-a-tool-to-evaluate-the-global-acceptance-to-practice-clean-intermittent-self-catheterization
#14
Amandine Guinet-Lacoste, Jacques Kerdraon, Alexandra Rousseau, Philippe Gallien, Jean-Gabriel Previnaire, Brigitte Perrouin-Verbe, Gérard Amarenco
AIM: In certain cases, a patient's anxiety, fear, or misconceptions can represent significant obstacles to the learning of Clean Intermittent Self Catheterization (CISC), and little is known about these psychological barriers. The aim of the present study is thus to construct and validate an "Intermittent Catheterization Acceptance Test (I-CAT)" to evaluate the psychological acceptance of CISC. METHODS: A study was carried out in nine neuro-rehabilitation and urology departments in French university hospitals...
January 16, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28089195/cumulative-volumetric-analysis-as-a-key-criterion-for-the-treatment-of-brain-metastases
#15
Il Kyoon Kim, Robert M Starke, Donald A McRae, Nadim M Nasr, Anthony Caputy, George D Cernica, Robert L Hong, Jonathan H Sherman
BACKGROUND: Recent studies have demonstrated diminished cognitive function, worse quality of life, and no overall survival benefit from the addition of adjuvant whole brain radiation therapy (WBRT) to stereotactic radiosurgery (SRS) in the management of brain metastases. This study analyzes the treatment outcome of SRS, specifically CyberKnife Radiosurgery, based on the total tumor volume compared to the absolute number of lesions. METHODS: A retrospective analysis of hospital records at Virginia Hospital Center for patients with brain metastases who underwent CyberKnife Radiosurgery between June 2008 and June 2014 was performed...
January 11, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28089142/bedside-monitoring-of-cerebral-energy-state-during-cardiac-surgery-a-novel-approach-utilizing-intravenous-microdialysis
#16
Simon Mölström, Troels H Nielsen, Claus Andersen, Carl H Nordström, Palle Toft
OBJECTIVES: This study investigated whether the lactate-to-pyruvate (LP) ratio obtained by microdialysis (MD) of the cerebral venous outflow reflected a derangement of global cerebral energy state during cardiopulmonary bypass (CPB). DESIGN: Interventional, prospective, randomized study. SETTING: Single-center, university teaching hospital. PARTICIPANTS: The study included 10 patients undergoing primary, elective coronary artery bypass grafting...
November 2, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28079875/early-postnatal-illness-severity-scores-predict-neurodevelopmental-impairments-at-10-years-of-age-in-children-born-extremely-preterm
#17
J W Logan, O Dammann, E N Allred, C Dammann, K Beam, R M Joseph, T M O'Shea, A Leviton, K C K Kuban
OBJECTIVE: A neonatal illness severity score, The Score for Neonatal Acute Physiology-II (SNAP-II), predicts neurodevelopmental impairments at two years of age among children born extremely preterm. We sought to evaluate to what extent SNAP-II is predictive of cognitive and other neurodevelopmental impairments at 10 years of age. STUDY DESIGN: In a cohort of 874 children born before 28 weeks of gestation, we prospectively collected clinical, physiologic and laboratory data to calculate SNAP-II for each infant...
January 12, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28078566/an-eye-tracking-controlled-neuropsychological-battery-for-cognitive-assessment-in-neurological-diseases
#18
Barbara Poletti, Laura Carelli, Federica Solca, Annalisa Lafronza, Elisa Pedroli, Andrea Faini, Stefano Zago, Nicola Ticozzi, Andrea Ciammola, Claudia Morelli, Paolo Meriggi, Pietro Cipresso, Dorothée Lulé, Albert C Ludolph, Giuseppe Riva, Vincenzo Silani
Traditional cognitive assessment in neurological conditions involving physical disability is often prevented by the presence of verbal-motor impairment; to date, an extensive motor-verbal-free neuropsychological battery is not available for such purposes. We adapted a set of neuropsychological tests, assessing language, attentional abilities, executive functions and social cognition, for eye-tracking (ET) control, and explored its feasibility in a sample of healthy participants. Thirty healthy subjects performed a neuropsychological assessment, using an ET-based neuropsychological battery, together with standard "paper and pencil" cognitive measures for frontal (Frontal Assessment Battery-FAB) and working memory abilities (Digit Sequencing Task) and for global cognitive efficiency (Montreal Cognitive Assessment-MoCA)...
January 11, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28078310/polg2-deficiency-causes-adult-onset-syndromic-sensory-neuropathy-ataxia-and-parkinsonism
#19
Lionel Van Maldergem, Arnaud Besse, Boel De Paepe, Emma L Blakely, Vivek Appadurai, Margaret M Humble, Juliette Piard, Kate Craig, Langping He, Pierre Hella, François-Guillaume Debray, Jean-Jacques Martin, Marion Gaussen, Patrice Laloux, Giovanni Stevanin, Rudy Van Coster, Robert W Taylor, William C Copeland, Eric Mormont, Penelope E Bonnen
OBJECTIVE: Mitochondrial dysfunction plays a key role in the pathophysiology of neurodegenerative disorders such as ataxia and Parkinson's disease. We describe an extended Belgian pedigree where seven individuals presented with adult-onset cerebellar ataxia, axonal peripheral ataxic neuropathy, and tremor, in variable combination with parkinsonism, seizures, cognitive decline, and ophthalmoplegia. We sought to identify the underlying molecular etiology and characterize the mitochondrial pathophysiology of this neurological syndrome...
January 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28076736/australian-institute-of-sport-and-australian-medical-association-position-statement-on-concussion-in-sport
#20
Lisa J Elkington, David C Hughes
Sport-related concussion is a growing health concern in Australia. Public concern is focused on the incidence and potential long term consequences of concussion. Children may be more prone to concussion and take longer to recover. The Australian Institute of Sport and the Australian Medical Association have collaborated to present the most contemporary evidence-based information in a format appropriate for all stakeholders. This position statement aims to ensure that participant safety and welfare is paramount when dealing with concussion in sport...
January 16, 2017: Medical Journal of Australia
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